Noiseless case for noisy machines.



J; F. OBYRNB NOISELESS OASE FOR NOISY MACHINES.

APPLICATION FILED MAR.15, 1911.

MKKIU k INV ENTOR Patented 0015.29, 1912.

3 SHEETS-SHEET 1.

lll A...

www

J. F. OBYRNE.l

NoIsBLEss CASE PoR NOISY MACHINES.`

APPLIUATIOLN FILED MA.15,1911. 1 j'042,957'. Patented 0615.29, 1912.

3 SHEETS-SHEET 2.

wsr-NESSES I V lNvEN-r-OR' @www .awmmnmw i. F. OBYRNB. NOISBLESS CASE POR NOISY MACHNES.

APPLICATION FILED MAR.15,1911.

` 1,0423957. Patented 0@t.29,1912.

3 SHEETS-SHEET 3.

LMUNTTED sTATEs PATENT onirica.

JOSEPH FRANCIS oBYnNE, o`r JARBIDGE, NEVADA.

To all whom 'it may concern/ Be it known that I, JOSEPH F. OBYRNE, a citizen of the United States, residingat Jarbidge, in the county of Elko and State of Nevada, have invented'a'new Noiseless Case for NoisyMachine'aof which the following is a specicatio'n;

My invention relates tothe absolute removal of all noise connected with such machines as computingmachines and ltypewriters.

The essential novelty of my invention is that I remove the noisy medium, air, from around the machine by incasing itin a suitable case, having means for operating the .inclosed-machine from without, and by a key operated valve connect the case, when closed, to a vacuum chamber which removes the air. In this wayI 'retain all the advan` tages of the present high standard Comput-- ,ing machines and typewriters, but absolutely remove all noise, such as the impact of the keys or the noise caused by any other noise making movements connected with the inclosed machine. I attain these objects by y use of a vacuum chamber and the lmechanism illustrated in the accompanyingdrawing, which shows the adaptationi for typel Writers, in which Y 80 Figure l is a planyof the vacuum case with the case v cover removed showing'the necessary parts 4of a typewriter.'v Fig. 2 is an enlarged section taken throu h" A-Af,

case with cover in place.l "There-'gis also shown at the right hand side, asecti'on taken through `B--Bvyof Fig. 1. Fig. 4 is an' enlarged section taken throu h.i thevaeuum two way valve shown at C o Fi'g 3L Fi 5 40 'is a side' elevation and sections combiner? of the case` and ,necessary parte l01E a type# writer.' The section of the case is taken through D-D' of Fig.l ,1, exce 't thefrelease mechanism, and hinge Whicg, are i taken `S through G-Gr; and E+E'v-ft`respectively.

Fig. 46 is a side elevationuof'an auxiliary plate used for operating ltypewriters which are run by electricity. ,l v

Similar letters refer `to. similar parts 50 throughoutithe several viewssg;

To explain the operationen,

f the machine we will assume that the case is'closed and that the operator -wishes to open it. He presses the key' marked Caser'elfmse,I Fig.

i. lThis raises the wedge a, seesection Fig.

3, through the slot b in the'pfflatch .c which Specification of Letters Patent.

Fig'l. Fig. 3 is a front elevation ofthe,

Norsntnss cAsn ron'NoIsY MACHINES.

Patented Oct. 29, 1912.

.AppiicatiQn met,1 March 15 1911"' sen-l No 614673' ,resses back the spring d of this latch. ,I'his releases the lock bar e, and the spring b'el'ow-V the valve k, or f, which is stronger lthan the spring above, or g, quickly shoves the balanced valve It up till it is stopped by the pojectingring le.l This shuts. oi the vacuum chamber opening Z and opens thev interior of` the case 'to the atmosphere through m, the air coming in, in the direction of the arrows, as shown. The vacuum beingbroken in tliecasathe springs in the hinges shown atn", Fig.v 5, raise Vthe top of the case to the position shown by the broken lines atp, Fig. 5.' To. close the case'theoper- .ato'r .presses the key marked Case lock,"

Fig. 1', whichl operates a valve at the base of the hinged cylinder lg, Fig. 5 thus connecting the base of thel c linder with the vacuum chamber through t e pipe r, Figs. 5 and 1which causes the piston to suck down due to atmospheric pressure, closing the case to a point at which the lock vbar e, Fig. 3, depresses the valve and connects the interior of the caselwith lthe vacuum chamber.

This causes the ,case to snap securely shut due to atmospheric pressure on the outside of the case cover which pressure makes a firm tight ointaround the' rubber gasket is around the edge of the case, In the section, Fig. B, it will be noticed that the hole through which thevlolk bar e reaches down ,onthe valve l1., is-ilarge enough so the circular motion of the point of e will not stick `von the case.vv The bar e is always locked by 4the latch ck after the 'Jop of the case moves away far enough so, the spring f cannot depress the weaker spring g through the 'valve h. 4 Having the case closed and wishing to shift the carris-.ge at the end of a line,

lopposite motion 1o the` carriage ofthe typewriter 'through the :'leXible cable a which runs around the pul'eys d and isattached to the carriage at b and to the bar w at y. Releasing the ca rriz' ge shift key the valve C connects the end o.J the cylinder u withthe atmosphere and the air pressure being equalized the carriage performs its usual motion.-

to the left in spacing. It is easily possible to construct the valve C so that it will re- -the carriage shift until the carriage had completed its travel to the right.

rcase from the machine.

From Fig. 5 it will be seen that the case touches the inclosed machine in the rubber cushions upon which the typewriter rests, or g; where the keys communicate motion, or is', andwhere the platen turningbar g passes into the platen. The universal joint at e is of strong rubber Fig. l, the key o', Fig. 5,' communicates nfotioif rto the typewriter key through the rubber cushion c, so no vibration can be transmitted tothe ln Fig. 5, F is an adjustable plate having at its -top part the spring hinge and spring n for raising the case cover. The adjustment'is made byplacing the cover on the case proper and connecting with the vacuum chamber. The pressure of the atmosphere on the gasket s gives the proper tit, after which the lock nuts p are securely screwed up. The stud bolts as shown are part of the case.

In case the typewriter is one of the electrically operated kind., the gasketed plate shown in Fig. 6 is screwed over the holes in the case, thus making an airtight `joint. The wires being pulled through the key holes. There is also a gasketed plate for the bottom as shown at a Fig. 5.

On the front of the case is a gasketed plate in the shape of a segment, b, Fig. 3, held to the case by thumb screws. The purpose of this plate is to enable the operator to get at the typebars for cleaning.

To turn the platen when the case is closed, there Vis yprovided the auxiliary wheel c, Fig. l, which turns the platen through the strong'rdbber universal joint e by means of the feather shown at d Fig. 2, on the shaft g its whole length. rlhis raised feather engages a slot in the platen rather loosely, so the platen is free to slide backand forth, along the said bar or shaft g. The use of the universal joint is to permit the carriage to move vertically when the shift key for capitals is used. i

To enable the operator to see the work, there is provided the glass cover lx, lined or edged with metal 2 for strength.

Having thus described my invention, l

claim as new and vdesire to secure by Letters Patent:

l. ln a sound deadenmg device for machines, a casing having a vacuum chamber, a cover for said casing, means for unlock'- ing said cover, and means for closing said cover, said unlocking and closing means bcing operated by air pressure.

2. In afsound deadening device for machines, a casing having a vacuum chamber, a cover for said casing, means for unlocking said cover, means for closingsaid cover, said unlocking and closing means being operated by air pressure, a valve for the unlocking means, a valve for the closing means, and means on the outside of the casing for causing the movement of said valves.

3. An air tight case for typewriters comprising a lower totally inclosing portion with continuous vertical walls terminating in a plane; a gasket upon said walls, in the plane; an adjustable spring hinged cover of strong transparent material bounded by a metal edge terminating in a plane and vacuum means for securing the cover.

4t. A 'totally inclosing operative case for typewriters having a complete keyboard corresponding to an inclosed typewriter keyboard, and said keys having attached rubber cushions for imparting motion to the inclosed typewriter keys; a case release key operating an opening device; a case lock key operating a closing device; a carriage shift7 key operating a carriage shift device; and a platen turning knob without the case having means for turning the typewriter platen within.

5. In a sound deadening device for-typewriters, a casing having a vacuum chamber, a cover for said casing, an auxiliary keyboard disposed on the exterior of said casing, the stems of sai/'d keys passing into said casing, means for preventing the escape ofv air from said casing around the stems, a platen turning knob, a shaft therefor arranged to pass throughthe casing and having a'connection with the platen shaft of the typewriter, and means for preventing the passage of air around said knob shaft.

G. In a sound deadening device for typewriters, a casing inclosing the typewriter and provided with a vacuum chamber, a cover for said easing, means for operating the typewriter keys from the exterior of the casing, means for turning the platen from the exterior ofthe casing, means for shifting the carriage from the exterior of the casing, and means for reventing the passage of air into or out o the casing.

7. In a typewriter case, a cover, a hinged cylinder at theback and center of the case, a piston in said cylinder connected to the case cover by jointed rod, a two way valve at base of cylinder for connecting the interior of said cylinder with a vacuum chamber or the atmosphere, a case lock key and a system of levers from said valve to said case lock key.

S. In an air tight case for typewriters, a

lojanee'd valve, a stron yspring belqw ,i i "M balanced Valve, L loche Mok-bar bovthev 'balanced Valve and 1n the Case cover, a

weaker mg above and for said lock-bar buse-ewan@ latch Gase ring acting on sad'glah and cover, ra SJ bar zmd'iuto said notch on Said lorfikibrhoe and if-orc@ said" latch back aygal'n'st its spring, a. case release key and connections v fom said Wedge to said case'releasa key.

v l i K smelam'for 'cnnectngthe space within the adapted to force said latch agans'tvsac'lckf ".cmer ,with vthe vacuum chamber when the @Ver isV cls'ed. hole in said latch, ,a lWedge to enga e said JOSEPH "VVitnesses:l

. EDWARD BENONE,

' THOMASB. BEADLE.

FRANCIS (yBYI'mE.4

fps. of 'this patent may ne obtanei fl' ve cents each, by'addressing the Commissioner of Patents,

' Washington, I). Gg 

